Through　the　overall　analysis　for　the　influence　factors　of　roads＇　emergency　earthquake　evacuation　in　crowded　areas,　we　concluded　that　the　dynamic　feedback　during　earthquake　evacuation　involves　three　aspects:　disaster　environment,　road　space　and　personnel　characteristics.　Based　on　these　aspects,　the　road　evacuation　causal　model　and　flow　model　with　system　dynamics　were　established.　In　reference　to　the　standard　＂Urban　planning　on　earthquake　resistance　and　hazardous　prevention＂　of　China,　parameters　for　emergency　shelter,　evacuation　road　and　evacuation　time　were　set　and　the　other　parameters　can　be　set　with　reference　to　past　research.　Finally,　the　dynamic　simulation　on　the　road　evacuation　capabilities　in　a　crowded　area　during　the　earthquake　was　conducted　and　related　planning　recommendations　were　given　for　densely　populated　areas　from　the　results.　The　study　provides　a　reference　for　the　urban　earthquake　relief　work.